feat: 新增 account 和 plan 目录

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

account/admin/skills/system/desktop-scroll/SKILL.md

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+---
+name: desktop-scroll
+description: Scroll mouse wheel in specified direction. When you need to scroll page/document content, navigate long lists, or zoom in/out with Ctrl. Directions - up/down/left/right.
+system: true
+handler: desktop
+tool-name: desktop_scroll
+category: Desktop
+---
+
+# Desktop Scroll
+
+滚动鼠标滚轮。
+
+## Parameters
+
+| 参数 | 类型 | 必填 | 说明 |
+|------|------|------|------|
+| direction | string | 是 | 滚动方向：up/down/left/right |
+| amount | integer | 否 | 滚动格数，默认 3 |
+
+## Directions
+
+- `up`: 向上滚动
+- `down`: 向下滚动
+- `left`: 向左滚动
+- `right`: 向右滚动
+
+## Examples
+
+**向下滚动**:
+```json
+{"direction": "down"}
+```
+
+**向上滚动 5 格**:
+```json
+{"direction": "up", "amount": 5}
+```
+
+## Use Cases
+
+- 滚动页面/文档内容
+- 浏览长列表
+- 配合 Ctrl 键缩放
+
+## Related Skills
+
+- `desktop-click`: 点击滚动区域
+- `desktop-hotkey`: 快捷键操作